Depending on the file, it may be decompressed or compressed. You need to decompress the file, if a pop-up says that the file is compressed just click yes

In the left panel you can see numbers, it represents the textures that are inside the file. Choose which one will you edit in that area.

Also on the bottom left corner describes the DDS you have selected. It shows the Compression and the size of the DDS. (In my sample the Compression is DXT1 with a width of 256 and a height of 256)

IMPORTANT - If you are replacing a texture you should replace it with the same width & Height and also the compression must be the same also

If you are done editing the DDS or have created a DDS to replace that texture click the Import Res button (near the Open Button) to import back the texture into the IFF File. The Mod Tool automatically changes the file.. meaning it has an auto-save feature.

Quit the program and there we go we are done

But WAIT! There is one more thing I forgot to tell. some textures have some sub-textures like this one... you can access that by clicking the drop-down menu near the SubFile word.

I installed the JAVA run time environment 64-bit and run the .JAR tool it showed the selection prompt for 2k12...then after pressing OK... the mod tool did not appear... tried running the JAR file over and over again but still nothing happened... I checked the batch file by running it... it showed an error message that something was missing which I could not remember...

I installed the JAVA run time environment 64-bit and run the .JAR tool it showed the selection prompt for 2k12...then after pressing OK... the mod tool did not appear... tried running the JAR file over and over again but still nothing happened... I checked the batch file by running it... it showed an error message that something was missing which I could not remember...

can i ask for help? i've downloaded the tool many times. i've also updated my java many tiimes too. but i can't get the tool to work. after i choose the 2k12 option, nothing happens. what can i do? please help. thank you